Crest Audio CR-5 User manual

CREST CR-5
English User Guide
Applicable SW version: CR5040
Version number: V 1.0
Update date: 2021/09/27

CR-5 English User Guide
Contents
1.Diving Safety Guide 4
2.Getting Started Guide 7
2.1 Maintenance 7
2.2 Charging 8
2.3 Wearing CR-5 8
2.4 Forced Shutdown 8
2.5 Buttons 9
3.Watch Mode 10
3.1 Screen and Function 10
3.2 History Record 11
4. Diving Mode 12
4.1 Scuba Mode 12
4.1.1 Scuba Mode Screen and Function 12
4.1.2 Scuba Mode Settings 18
4.2 Freediving Mode (Free Mode) 20
4.2.1 Freediving Mode Screen and Function 20
4.2.2 Freediving Mode Settings 22
4.3 Gauge Mode 23
4.3.1 Gauge Mode Screen and Function 23
4.4 Plan Mode 26
4.4.1 Plan Mode Screen and Function 26
5. Sports Mode 28
5.1 Run Mode 28
5.2 Hiking Mode 31
5.3 Bike Mode 32
5.4 Swim Mode 34
5.5 Triathlon Mode 35
5.6 Work Out Mode 36
6. Settings 37
6.1 Diving Settings 37
6.2 Sports Settings 39
6.3 System Settings 42
6.4 User Settings 44
6.5 Delete 45
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6.6 Reset 45
6.7 About 45
7. Logs 46
8. Navigation 46
9. Timer 47
10. Heart Rate Watch 47
11. Synchronization and APP 48
12. Disclaimer 49
12.1 User's Responsibility 49
12.2 About Flying After Diving 49
13. Limited Liability Warranty 50
14. Contact CREST 52
15. Copyright Statement 52
16. Appendix 53
16.1 Product Specifications 53
16.2 Diving Terms and Explanations 54
16.3 NCC Warning 55
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1.Diving Safety Guide
1.1 Please ensure that you fully understand how to use your dive equipment
and the CR-5 dive function and what the information displayed on this
product means. If you have any questions about this product, please always
contact your CREST dealer for answers prior to your diving activity and use.
Remember, your safety is your responsibility, so please pay attention to all
details and do not ignore any signs of discomfort!
1.2 Please be sure to read and thoroughly understand the entire contents of
the CR-5 Diving Instruction Manual. Any confusion or negligence, failure to
follow the contents of the Instruction Manual, or failure to follow normal
operating practices may result in serious injury to life or even death.
1.3 The CR-5 diving function is designed for recreational diving use only,
and CREST strongly advocates that this device should not be used for
commercial or professional diving activities. Anyone engaged in commercial
or professional diving is often exposed to depths and conditions beyond
those for which the watch was designed, which may result in the occurrence
of Decompression Illness (DCI).
1.4 This product is not a substitute for formal diving education and training.
Only divers who have received formal training from a professional dive
operator and know how to operate the dive equipment should use this
product.
1.5 Each dive may carry a risk of decompression sickness and even if you
follow your dive plan or the calculations of the dive plan and dive information
shown on this product, the product cannot anticipate and measure changes
in individual physiology. Therefore, divers should try to stay within the limits
indicated by the product.
1.6 It is recommended that you seek the consent of your physician before
engaging in diving activities. There is no algorithm, formula, theorem, dive
computer or dive program that can completely eliminate the chance of
decompression sickness or oxygen toxicity. Individual physiology varies
depending on environmental factors and therefore this product cannot fully
protect you from injuries associated with diving activities.
"The best way to completely avoid injuries associated with diving
activities is not to engage in them."
1.7 This product is not guaranteed to be in full functional condition at all
times. Always carry a depth gauge, pressure gauge, timer and hand gauge
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as backup instruments and always compare your dive plan and check the
remaining residual pressure.
1.8 This product is factory tested to a depth of 100 m/330 ft and is intended
for recreational diving only. CREST strongly recommends that recreational
divers do not exceed the maximum depth of 40 m/131 ft specified for
recreational diving (air diving), or the maximum depth allowed by your dive
training, and do not use it in diving environments where you are not trained
to dive within the depth limits of your training.
"Your safety is your own responsibility, and to challenge risk is to
challenge your luck."
1.9 CREST strongly discourages recreational divers from engaging in diving
activities that require the performance of decompression, or diving above
the No Decompression Limit (NDL). Decompression diving activities require
specialist training and an adequate air supply.
As soon as you exceed the NDL or the product signals that you are
recommended to perform a decompression dwell, you should immediately
stop diving and begin a slow rise and decompression procedure. Please pay
close attention to the flashing digits, warning tone and vibration warning,
and pay attention to the ascent speed, dwell depth and time of the product,
there may be multiple recommended dwell depths and times, we suggest
you follow the instructions and complete the dwell.
1.10 This product can assist in calculating dive no-decompression limits
etc., but it does not mean that you can skip the dive planning process etc. If
your dive plan is more conservative, please always give priority to your dive
plan.
1.11 To ensure that the display of the product is correct and complete,
before each dive, you should start the product correctly and check its
functions, and make sure that the battery power is sufficient, the oxygen
concentration setting, the personalization setting, and adjust other settings
to make sure they are compatible with your dive plan.
1.12 Any diving activity undertaken prior to the first activation of this product
may result in misleading information. If the product is left on the surface and
not dived with the diver, the dive computer meter will not provide accurate
dive planning and dive information calculations for subsequent dives.
1.13 Divers must not exchange or share this product with each other, and
their internal dive information must match the original user in order to ensure
the correctness of the dive plan and dive information displayed
subsequently; their internal information cannot be transferred to divers who
do not wear it in its entirety, and it cannot be used for subsequent repeat
dives.
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1.14 Before diving, please make sure that the settings of this product are
correct and fit your dive plan, e.g. the oxygen ratio of the gas to be used,
and input them into this product. Failure to personally confirm the contents
of the oxygen cylinder, or to set the correct personalized adjustment
settings, may result in incorrect calculation of the dive plan and dive
information, and in severe cases may result in the diver's life being in
danger.
1.15 The input value of the oxygen concentration percentage of this product
is only accepted as an integer, please do not remove the decimal point by
yourself when inputting. The recommended input method is the
unconditional rounding method, for example, if your cylinder measurement
is 31.8%, please input the oxygen concentration value: 32%. The decimal
point will be underestimated and will result in incorrect calculation of the dive
information, which may lead to life threatening divers.
1.16 Divers should avoid flying during the period when this product shows
the proposed no-fly countdown. You should also check that the ban is lifted
before flying. Flying or travelling to high altitude areas during the no-fly
period may significantly increase the risk of developing decompression
sickness. Please review the recommendations of the Diver Alert Network
(DAN).
1.17 This device contains a lithium battery. To avoid the risk of fire or
combustion, do not attempt to disassemble, crush, puncture, or throw the
device into a fire or leave it in water for a long period of time. If the device is
damaged and you wish to dispose of it, please dispose of it properly or
recycle it in accordance with the regulations in your area.
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2.Getting Started Guide
2.1 Maintenance
1. Storage: Please keep this product in a cool place, do not place it in a dangerous
environment, squeeze, heavy pressure, high temperature, low temperature,
high humidity, easy to drop, heavy impact, etc. If the product is not used for a
long time, please make sure that the power supply is at least 50%, and check
and charge it regularly. If the battery capacity and voltage are not used for a
long time, it may cause irreversible damage to the battery.
2. Do not disassemble the body or case of this product by yourself.
3. After use: Make sure to soak and rinse the product with water after use,
especially underwater or in seawater.
The recommended cleaning method is.
● Remove the watch from your hand and gently grasp it by the strap to place
the entire product in the water.
● Soak in water for about three to five minutes and then shake gently in the
water to allow water to flow into the crevices to clean the salt.
● Please do not hit the water vigorously.
● Do not use strong water jets to rinse.
● Do not use any cleaning solvent other than water to clean.
● After cleaning, put it back on your hand or leave it in the shade to dry
naturally.
● After cleaning, please make sure that the charging hole is free of water and
completely dry before charging, otherwise there will be a risk of short circuit
or electric shock.
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2.2 Charging
1. Please install the charging clip and charging cable to a USB output power
source, such as a mobile phone charger, mobile power, etc.
2. Please make sure that your power output device is a safe and qualified
product. Do not use a product from an unknown source or without safety
certification regulations.
3. After confirming that the charging clip is connected to the power source, open
the charging clip and confirm the direction of the charging point.
4. When the device is connected to the power source, the battery status will be
displayed on the screen.
5. Charging time is recommended to be about one to three hours, and may take
longer for weaker transformers.
2.3 Wearing CR-5
1. The GPS antenna is hidden underneath the screen. It is recommended to keep
the antenna pointing upwards to get a better signal when wearing it.
2. Because of the correctness of the optical heart rate component, please wear it
1-2cm behind the wrist joint.
3. Avoid wrist rotations and palm opening and closing movements that will tug on
the wrist muscles at the beginning of the measurement.
2.4 Forced Shutdown
When your CR-5 is off, just press and hold the power button at the bottom left
corner for about 15-20 seconds, the CR5 will turn off forcibly, press the power
button again and it will turn on normally. If there is no response, it is possible that
your CR-5 has run out of power. Please connect the charging clip to your watch and
let it charge for about 5 minutes and try again.
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2.5 Buttons
Button
Function
①
Backlight
-backlight On/Off
-press and hold for
two seconds for the
backlight to stay on
②
Back
-return
-power switch
③
Up
-move up
④
Mode
-mode selection
-confirm selection
-pause (sport mode)
⑤
Down
-move down
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3.Watch Mode
3.1 Screen and Function
3.1Screen Functions
Digital time screen (start screen)
Pointer time screen (start screen)
Time Screen (Start Screen)
Start screen, the watch-face can enter the settings
to change.
(Path: Settings > Set System > Watch Face)
Access: Power on or press the back button on any
screen to exit to the top level.
Icon：
1.Pedometer：
Shows the current step count.
2.Surface interval：
Shows the current surface interval time.
Please note:
Before starting the diving activity, please make
sure that the required setting information of
this product has completed the relevant
settings, and return to the watch mode, to
confirm that the product has been correctly
powered on and then enter the water, in order
to correctly enter the water and automatically
start.
Digital time screen (start screen)：
After Scuba and Gauge Mode
Time Screen (Start Screen)
After Scuba and Gauge Mode
Icon：
1.Surface interval：
Shows the current surface interval time.
2.No-fly time：
If this symbol appears, you are still within the no-fly
time after a dive, so do not travel by air or go to
higher altitudes.
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Pointer time screen (start screen)：
After Scuba and Gauge Mode
Please refer to historical records and version
information for exact no-fly times.
3.No-dive time：
If this symbol appears, it means you are still in the
no-dive time after the dive, please do not dive
again.
Please refer to your dive history and version
information for the exact no-dive time.
Meanwhile, you will not be able to use the
following functions:
Scuba Mode, Freediving Mode, Plan Mode.
3.2 History Record
3.2 History Record
Last Dive Log
Last Dive Log
Access：Press the DOWN button once in watch
mode to access.
Icon：(Hours: Minutes)
1. Year, month and day: the last dive log out of the
water
2. SI: Surface interval time accumulation
3. No Fly: No-fly time countdown
4. NO Dive: No-dive time countdown
Scuba History
Scuba History
Access：Press the DOWN button twice in watch
mode to access.
Icon：
1. Dives：All scuba logs accumulation
2. TTL Time： The cumulative time log of all scuba
dives
3. Max Depth：the maximum depth in all scuba
diving logs
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Freediving History
Freediving History
Access：Press the DOWN button three times in
watch mode to access.
Icon：
1. Dives：All freediving logs accumulation
2. Max Time：The longest time in all freediving logs
2. Max Depth：The maximum depth in all freediving
logs
4. Diving Mode
4.1 Scuba Mode
4.1.1 Scuba Mode Screen and Function
4.1.1 Scuba Mode Screen and Function
Scuba Mode - Surface Preview
Scuba Mode - Surface Preview
Icon：
OC：abbreviation of Scuba mode, open-circuit
Scuba.
237°：the current pointing direction.
NORM：Conservatism level
Default: Normal (NORM). Available values: conservative
(CONS), normal (NORM), and aggressive (AGGR).
PO2：Current setup of PPO2 (partial pressure of
oxygen).
Default: 1.4.
Setup range: 1.2 - 1.6
MOD：Maximum Operating Depth suggestions.
Based on the set PO2 and the oxygen
concentration value of the gas used, the maximum
depth that the diver is allowed to dive to is
calculated.
O2%：Oxygen percentage value.
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SI：current surface interval time.
(less than 10 hours: HOUR:MINUTE
After 10 hours: HOUR
After 24 hours: --)
Scuba Mode -
Twist-to-next information
Scuba Dive Mode - Surface Preview, Underwater
Twist-to-next information
Twist-to-next：
This feature detects a rotation of your wrist and
helps you turn the page automatically without
pressing a button while diving.
This feature is on by default and can be turned off.
(Path: Settings＞Set dive＞Twist to next)
Surface preview information: SI/MOD, bearing,
tissue concentration.
Underwater information: dive time/temperature,
position, tissue concentration.
Scuba Mode - Underwater
Scuba Mode - Underwater
Description：
020.6m：Current Depth
NDL：The Non-Decompression Limit time in
minutes, will show 99 when NDL exceeds 99
minutes.
：Ascent speed (03 means 3 m/min).
If it exceeds 10 meter/minutes, there will be an
alarm warning (short beeping repeated) with
vibration.
：Descent speed（03 means 3 m/min）
NO arrow icon: Diver is stationary.
09:25：Current time.
TIME：Dive time.
TEMP：Water temperature.
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Scuba Mode – Safety stop
(When the NDL has not been exceeded)
Scuba Mode – Safety stop
(When the NDL has not been exceeded)
Description：
004.6m：Current Depth
STOP：When divers ascend to 5m (16.4 ft), the
diver computer will start a Safety Stop
countdown of 5 minutes automatically. If the
diver does not complete Safety Stop and ascent,
there will be an alarm warning (short beeping
repeated) with vibration, and this dive will end
according to Log Stop settings.
TIME: Dive time.
CEILING: The depth at which divers should ascend
to and remain.
TEMP：Water temperature.
Scuba Mode – Safety stop finished
(When the NDL has not been exceeded)
Scuba Mode – Safety stop finished
(When the NDL has not been exceeded)
Description：
CLEAR: When divers finish Safety Stop at the
CEILING depth, the dive computer will show the
word CLEAR indicating that it is OK to perform a
slow ascent to the surface.
：Ascent speed (03 means 3 m/min).
：Descent speed（03 means 3 m/min）
NO arrow icon: Diver is stationary.
09:25：Current time.
TIME：Dive time.
TEMP：Water temperature.
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Scuba Mode – Underwater
When the NDL has been exceeded
(first three minutes)
Scuba Mode – Underwater
When the NDL has been exceeded
(first three minutes)
Description：
NDL：The Non-Decompression Limit time in
minutes, will show 99 when NDL exceeds 99
minutes.
If it reaches 4 minutes remaining, there will be
an alarm warning (short beeping repeated) with
vibration. Divers should ascend slowly and end
your dive.
When exceeds NDL time, the first 3 minutes will
be shown in:
- minutes: seconds
CEILING: The depth at which divers should ascend
to and remain when they are required to perform
decompression stops.
Scuba Mode – Underwater
When the NDL has been exceeded
(after three minutes)
Scuba Mode – Underwater
When the NDL has been exceeded
(after three minutes)
Description：
DECO：The time has exceeded the NDL.
DECO:
When time passes over 3 minutes, it will show
in: - minutes.
CEILING: The depth at which divers should ascend
to and remain when they are required to perform
decompression stops.
Scuba Mode – Underwater
When exceeding the NDL and ascent to
ceiling depth.
Scuba Mode – Underwater
When exceeding the NDL and ascent to ceiling
depth.
Description:
STOP: (Decompression Stop)
After reaching CEILING depth, the remaining
amount of time indicated on the screen will be
displayed as a countdown timer. Please remain
at the ceiling depth the entire duration indicated
by the countdown timer if you have enough air
and no other potential risks are evident.
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If you do not remain at the ceiling depth for the
entire duration indicated by the countdown
timer, there will be an alarm warning (short
beeping repeated) with vibration.
CEILING: The depth at which divers should
ascend to and remain when they are required to
perform decompression stops.
Scuba Mode – Underwater
When exceeding the NDL,
and Decompression stop at CEILING
has ended.
Scuba Mode – Underwater
When exceeding the NDL,
and Decompression stop at CEILING has ended.
Description:
CLEAR: When divers finish decompression stop at
ceiling depth, dive computer will show CLEAR and
indicate divers can now slowly ascend to the
surface.
PO2: when accumulated PO2 calculation
exceeds your PO2 setting, it will show the
current accumulated PO2 value.
If accumulated PO2 calculation does not exceed
your PO2 setting, it will show current time.
Scuba Mode – Underwater
When reaching the depth indicated for
Safety Stop or Decompression Stop but
no Stops are performed
Scuba Mode – Underwater
When reaching the depth indicated for Safety
Stop or Decompression Stop but no Stops are
performed
Description:
OVER：After reaching the depth indicated for
Safety Stop/Decompression Stop but divers do
not perform Stops, it will blink and there will be
an alarm warning (short beeping repeated) with
vibration.
Please remain at the ceiling depth the entire
duration indicated by the countdown timer if
you have enough air and no other potential risks
are evident.
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Scuba Mode – Scuba End
Scuba Mode –Scuba End
Screen will show Dive Profile of current dive for
approximately 1 minute.
To check entire history dive logs and dive profiles,
select the log and press the DOWN button to go to
the second page to view.
Scuba Mode – No Diving
Scuba Mode – No Diving
If NO DIVE recommendation time countdown
shows on the screen, DO NOT continue diving
activities.
For an exact NO DIVE recommendation time
countdown please check the Dive History page.
Note:
Scuba Mode, Freediving Mode and Plan Mode
will remain locked during NO DIVE time.
Decompression Diving Warning for Recreational Divers:
Decompression options provided by dive computer and presented in this user manual
should only be used as emergency procedures when a NDL limit has been accidentally
surpassed.
It is important to remember that decompression stops are driven by both depth and NDL
violations. It is possible to see several decompression stop indications at different
CEILING depths and different times depending how severe the depth and NDL
violations have been.
Decompression diving is not an activity that should be performed by recreational divers
as a standard practice. Decompression diving requires extensive training, deep
knowledge of diving physics and diving physiology and several pieces of extra gear and
sufficient gas supply to safely perform the required decompression stops.
We strongly discourage recreational divers from performing decompression diving.
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4.1.2 Scuba Mode Settings
4.1.2 Scuba Mode Settings
Path：
1. Menu > Settings > Set Dive > Scuba
2. Menu > Diving > Scuba > Press the UP button > Scuba Quick Setup
Set Gas
Set Gas
After entering this setting, press the up/down button
to select the O2 value after it blinks, then press the
mode button to confirm the setting value and stop
blinking to set the PO2 value.
After the PO2 value blinks, press the up/down button
to select the setting value, then press the mode
button to confirm the setting value and stop blinking
to complete the setting.
Please note:
1. To change this O2 value, please make sure to
measure and confirm the oxygen percentage of
the gas cylinder you are using. You need to have
the relevant license and professional training in
the use of high oxygen gas, and understand the
risks of using high oxygen gas.
2. Before changing the PO2 value, please make
sure you understand the possible risks
associated with the change.
Conservatism
Conservatism
A conservativeness scale can be selected here.
WARNING:
Please make sure you fully understand that
changing this setting will affect algorithm
calculations and the related risks.
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Scuba Depth Alarm
Scuba Depth Alarm
After entering this setting, press the up/down button
to select on after the blinking, then press the mode
button to confirm the setting value and stop blinking
to set the depth; if you select off, the depth cannot be
set.
After the depth blinks, press the up/down button to
set value, then press the mode button to confirm the
set value and stop blinking to complete the setting.
Scuba Time Alarm
Scuba Time Alarm
After entering this setting, press the up/down button
to select on after the blinking, then press the mode
button to confirm the setting value and stop blinking
to set the time; if you select off, the depth cannot be
set.
After the time blinks, press the up/down button to set
value, then press the mode button to confirm the set
value and stop blinking to complete the setting.
Sampling
Sampling
Set the dive log sampling frequency.
Default: 10 seconds
Please note:
This setting will be automatically synchronized to the
Gauge Mode.
Log stop
Log stop
Set the dive log end time.
Default: 1 minute
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4.2 Freediving Mode (Free Mode)
4.2.1 Freediving Mode Screen and Function
4.2.1 Freediving Mode Screen and Function
Freediving Mode - Surface preview
Freediving Mode - Surface preview
Description：
FD：abbreviation of Freediving mode.
The Freediving Sampling Rate is 0.5 seconds
fixed by default.
00：Total freediving counts within 12 hours
TEMP：Water temperature
SI：Surface Interval（MINUTE : SECOND）
LAST DPTH：Max Depth of previous dive
LAST TIME: Dive Time of previous dive
Freediving Mode - Surface Preview
Twist-to-next information
Freediving Mode - Surface Preview
Twist-to-next information
Twist-to-next：
This feature detects a rotation of your wrist and
helps you turn the page automatically without
pressing a button while diving.
This feature is on by default and can be turned off.
(Path: Settings＞Set dive＞Twist to next)
Surface preview information: last depth/ last time,
current time.
Freediving Mode - Underwater
Freediving Mode - Underwater
Description：
012.5m：current depth
27.5c：water temperature
TIME：dive time
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